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GB/T3036 Marine Butterfly Valve in 316 Stainless Steel With PTFE Seat for OEM
Product Spotlights
Marine-grade 316 stainless steel construction offers superior corrosion resistance in seawater environments. PTFE seat ensures a bubble-tight seal, chemical inertness, and low operating torque. Compliant with GB/T 3036 standard, available in sizes DN50-DN600 with multiple actuation options. Manufactured in an ISO9001-certified facility, ideal for OEMs in shipbuilding and offshore industries seeking reliable, durable fluid control solutions.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
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Standard:
GB/T 3036
Application:
Other, Marine
Material Body/Disc:
316 Stainless Steel
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
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Standard
GB/T 3036
Application
Other, Marine
Material Body/Disc
316 Stainless Steel
Seat Material
PTFE (Polytetrafluoroethylene)
Connection Type
Wafer or Lug (Optional)
Operation
Lever, Gearbox, or Actuator (Optional)
Pressure Rating
PN10/PN16/PN25 (Customizable)
Temperature Range
-20°C to 180°C (with PTFE seat)
Size Range
DN50 to DN600 (2“ to 24“)
Sealing
Bidirectional, Zero Leakage Design
As a professional valve manufacturer established in 2016, Shanghai Zhibang Valve is dedicated to providing high-performance fluid control solutions for demanding industrial and marine applications. Our GB/T 3036 Marine Butterfly Valve in 316 Stainless Steel with a PTFE seat is engineered specifically for OEM partners and system integrators who require reliable, corrosion-resistant, and long-lasting valves for seawater, ballast, and other critical shipboard systems. This valve combines robust construction with superior sealing technology, offering an optimal balance of performance, durability, and cost-effectiveness for your marine projects.
This valve is designed to meet the stringent requirements of marine environments, where equipment is constantly exposed to saltwater, humidity, and variable pressures. We understand that downtime is not an option at sea, which is why every component is selected and manufactured with reliability as the top priority.
Key Features & Technical Advantages:
- Premium Corrosion Resistance: The valve body and disc are constructed from 316 stainless steel (UNS S31600), which offers excellent resistance to pitting and crevice corrosion in chloride-containing environments like seawater, far superior to 304 stainless steel.
- High-Performance PTFE Seat: The seat is made from PTFE, a material renowned for its chemical inertness, wide temperature tolerance, and low friction. This ensures a tight, bubble-tight seal with minimal operating torque and excellent resistance to a broad range of chemicals found in marine applications.
- Robust & Compact Design: The wafer-style design provides a lightweight and space-saving solution without compromising strength, making it ideal for installations where space and weight are critical considerations.
- Versatile Operation: Available with various actuation options to suit your system's needs, from simple manual lever handles for quick operation to gearboxes for higher torque applications, and pneumatic or electric actuators for automated control systems.
- Bidirectional Sealing: Engineered to provide effective sealing against flow from either direction, enhancing system safety and flexibility in piping layout design.
- Low Maintenance: The simple design with minimal moving parts and the durability of 316SS and PTFE contribute to a valve that requires very little maintenance over its long service life.
Detailed Technical Specifications:
| Parameter | Specification |
|---|---|
| Design & Manufacturing Standard | GB/T 3036 (Chinese National Standard for Butterfly Valves) |
| Body & Disc Material | 316 Stainless Steel (CF8M equivalent) |
| Stem Material | 316 Stainless Steel |
| Seat Material | Virgin PTFE |
| Seal (Shaft Seal) | PTFE V-ring or EPDM O-rings (Optional) |
| Nominal Pressure (PN) | PN10, PN16, PN25 (Standard); Other ratings available upon request |
| Temperature Range (with PTFE seat) | -20°C to 180°C (-4°F to 356°F) |
| Nominal Diameter (DN) | DN50 (2") to DN600 (24") |
| Connection Standards | Face-to-face dimensions per GB/T 3036; Flanges can be customized to ANSI, JIS, DIN, etc. |
| Leakage Class | Class A (Zero Leakage) or Class B (Low Leakage) per standard |
| Operation | Lever Handle, Worm Gear Operator, Pneumatic Actuator, Electric Actuator |
| Surface Treatment | Passivated for enhanced corrosion resistance |
Benefits for OEMs and End-Users:
- Enhanced System Reliability: The corrosion-resistant materials and tight seal minimize the risk of valve failure, ensuring continuous operation of critical marine systems.
- Reduced Lifecycle Cost: The durability and low maintenance requirements translate to lower total cost of ownership over the vessel's lifespan.
- Design Flexibility: Multiple size, pressure rating, and actuation options allow for easy integration into new builds or retrofit projects.
- Compliance & Quality Assurance: Manufactured in our ISO9001-certified facility, ensuring consistent quality control from raw material to finished product. The GB/T standard provides a recognized benchmark for performance.
- Global Supply Chain Support: With annual export values between US$1-1.5 Million and major shipment ports in Shanghai, Guangzhou, Hong Kong, and Beijing, we efficiently serve a global clientele across North America, South America, Europe, Asia, Africa, and Oceania.
For over eight years, Shanghai Zhibang Valve has built a reputation as a trusted supplier to the global marine industry. Our commitment to quality, evidenced by our ISO9001 certification, is embedded in every valve we produce. We have successfully supplied valves for numerous shipbuilding and offshore projects worldwide, understanding the critical nature of marine-grade components. Choosing our GB/T 3036 Marine Butterfly Valve means partnering with a manufacturer that prioritizes performance, reliability, and customer support. Contact us today to discuss your specific requirements, request samples, or receive a detailed quotation. Let us provide the fluid control solution that meets the exacting standards of your marine applications.
Frequently Asked Questions (FAQ):
-
Q: Is this valve suitable for handling seawater directly?
A: Yes, absolutely. The combination of 316 stainless steel (which has added molybdenum for chloride resistance) and a chemically inert PTFE seat makes this valve highly suitable for seawater, ballast water, brine, and other corrosive marine fluids. -
Q: Can you provide valves with flanges matching ANSI or DIN standards instead of GB?
A: Certainly. While the valve is manufactured to the GB/T 3036 standard for dimensions and performance, we can customize the flange drilling, facing, and dimensions to meet ANSI (ASME), DIN, JIS, or other international standards upon request to ensure perfect fitment in your global projects. -
Q: What is the main advantage of a PTFE seat compared to EPDM or NBR?
A: PTFE offers a much wider chemical compatibility and temperature range than elastomers like EPDM or NBR. It is virtually inert, has a very low coefficient of friction (reducing operating torque), and provides excellent sealing performance, making it ideal for applications where media compatibility or higher temperatures are a concern. -
Q: Do you offer actuated versions of this valve?
A: Yes, we do. The valve can be fitted with pneumatic (double-acting or spring-return) or electric actuators. We can supply the complete assembly, tested and ready for installation, based on your required torque, voltage, and control signal specifications. -
Q: What is the typical delivery lead time for an order?
A: Lead times vary based on order quantity, size, and customization. For standard sizes and configurations in moderate quantities, typical production lead time is 4-6 weeks. We provide accurate timelines upon receipt of your detailed inquiry. -
Q: How does the GB/T 3036 standard compare to API, ISO, or other international standards?
A: GB/T 3036 is a comprehensive Chinese national standard that specifies requirements for design, dimensions, materials, pressure-temperature ratings, and testing for butterfly valves. It is widely recognized and accepted, especially in marine and industrial projects. Its performance parameters (like pressure ratings and leakage classes) are generally aligned with common international practices. -
Q: Can this valve be used for throttling (flow control) applications?
A: While butterfly valves can be used for throttling, their flow characteristics are not as linear as globe or control valves. For moderate throttling duties, especially with a gear operator or actuator for precise positioning, it can be effective. For critical control applications, we recommend consulting with our engineers. -
Q: What kind of testing do your valves undergo before shipment?
A: Each valve undergoes routine tests including shell strength test (hydrostatic pressure) and seat leakage test (usually with air or water) per the requirements of the GB/T 3036 standard. Additional tests like cryogenic testing or full material certification can be provided upon request.
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1Yr
Business Type
Manufacturer
Year Established
2016
Annual Export Value
US$1 Million - US$1.5 Million
Product Certifications
ISO9001
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